valve seat

2 month ago

4 0

Jianhu Fulida Machinery Manufacturing Co. , Ltd.

 3 month year

Product details

The valve seat of the flat valve is the key component for the flat valve to achieve sealing and stable operation. Usually, a floating valve seat design is adopted, such as an O-ring seal and a floating valve seat structure with preload, so that the flat gate valve can be sealed in both directions. The opening and closing torque of this structure is only 1/2 of that of an ordinary valve, and the valve can be opened and closed easily.

Sealing surface design: The sealing surface is generally a flat surface or a slightly tapered surface, which fits tightly with the sealing surface of the gate to form a reliable seal. In order to improve the sealing performance and wear resistance, PTFE and other materials are often inlaid on the sealing surface, which has a double sealing effect of PTFE to metal and metal to metal. The PTFE sealing surface can also remove dirt from the gate at the same time.

Material selection
Metal materials: Commonly used are copper alloys, stainless steel, alloy steel, etc. Copper alloys such as aluminum bronze have good wear resistance, corrosion resistance and self-lubrication, and are suitable for some occasions with high requirements for sealing performance. Stainless steels such as 304 and 316 have excellent corrosion resistance in corrosive media, which can ensure the long-term stable operation of the valve seat. Alloy steels such as 4130 and 4140 have high strength and hardness and are suitable for harsh working conditions such as high pressure and high temperature.

Non-metallic materials: mainly PTFE, rubber, etc. PTFE has extremely low friction coefficient, excellent corrosion resistance and self-lubricating properties, which can effectively reduce the opening and closing torque of the valve and improve the sealing performance. Rubber materials such as nitrile rubber and fluororubber have good elasticity and sealing properties and are suitable for some low-pressure and normal temperature pipeline systems.

Working principle
Closing process: When the valve is closed, turn the handwheel clockwise, and the gate moves down to the bottom. Due to the effect of the medium pressure, the inlet sealing seat is pushed toward the gate, forming a larger sealing pressure ratio, thereby forming the first seal. At the same time, the gate is pressed against the outlet sealing seat to form a double seal.

Product Parameters:

Product Name:	Valve seat
Specification model:	2 9/16
Implementation standard:	API 6A
Rated working pressure:	15000psi
Product specification level:	PSL1~PSL3G
Product performance level:	PR1~PR2
Temperature level:	PU, LU
Material level:	AA~FF
Product color:	Silver

Detail Pictures:

Opening process: When opening the gate, rotate the handwheel counterclockwise, the gate moves up, and the guide hole and the channel hole are connected. As the gate rises, the through hole gradually increases. When it reaches the limit position, the guide hole coincides with the channel hole and is fully open.

As a petroleum machinery manufacturer, our company also produces Blowout Preventer, Manifold, Cellar Connection, Valve, Pipe Fitting and Control Apparatus, etc.

If you need, please contact us.

Our Service:

You May Also Like

Contact Now

If you are interested in the product, contact 2bvideo.com for more information for more information

To:: Jianhu Fulida Machinery Manufacturing Co. , Ltd.

Message:

Submit

Disclaimer：

The information of 2bvideo.com limited shown above is provided by the user or collected on the network. Video 2B does not guarantee the authenticity,accuracy and legitimacy of 2bvideo.com limited information. Video 2B does not involve legal relationships and disputes between users arising from transactions other than secured transactions on this website. Disputes shall be settled by you through negotiation. If you are the person in charge or relevant employee of this enterprise, if you find that the enterprise information is incorrect or want to manage thiscompany, please contact us jacklee1558@gmail.com, after you claim the enterprise, you can obtain management permission, publish supplyand demand information, bring consulting orders, and remove page advertisements.

Jianhu Fulida Machinery Manufacturing Co. , Ltd.

 Audited supplier

3 month

Address: China

Main Product: Wellhead installation, Metal valve, Blowout preventer, Fracturing Manifold, Forged steel flange , Forged pipe fittings

 Contact now